ProgBasics07Nested-Loops-Y01matrix

import java.util.Scanner;

public class Y01matrix {
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            int a = Integer.parseInt(scanner.nextLine());
            int b = Integer.parseInt(scanner.nextLine());
            int c = Integer.parseInt(scanner.nextLine());
            int d = Integer.parseInt(scanner.nextLine());
            for (int i = a; i <= b; i++) {
                for (int j = a; j <= b; j++) {
                    for (int k = c; k <= d; k++) {
                        for (int l = c; l <= d; l++) {
                            if ((i!=j)&&(k!=l)&&(i+l==j+k)){
                                System.out.println(""+i+j+"");
                                System.out.println(""+k+l+"");
                                System.out.println();
                            }
                        }
                    }
                }
            }
        }
    }